Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) (-) Enzymatic Assay (EZA) (2) Gas Chromatography (GC) (1) Sample Type Serum or Plasma (1) Urine (1) Test Area Exposure (2) Test Category Analgesics (28) Antianxiety (3) Antiepileptics/Antiseizures (2) Antipsychotics (4) Drugs of Abuse (1) Industrial/Environmental Toxins (1) (-) Other (2) Test Sub-Category Other (2) Test Test Name 3250SP Oxalate, Serum/Plasma 3250U Oxalate, Urine